/* style/about.css */
/* body đã padding-top: var(--header-offset) từ shared.css; trang này không cần thêm */

:root {
  --page-about-primary-color: #11A84E;
  --page-about-secondary-color: #22C768;
  --page-about-background-color: #08160F;
  --page-about-card-bg: #11271B;
  --page-about-text-main: #F2FFF6;
  --page-about-text-secondary: #A7D9B8;
  --page-about-button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  --page-about-border-color: #2E7A4E;
  --page-about-glow-color: #57E38D;
  --page-about-gold-color: #F2C14E;
  --page-about-divider-color: #1E3A2A;
  --page-about-deep-green-color: #0A4B2C;
}

.page-about {
  font-family: Arial, sans-serif;
  color: var(--page-about-text-main); /* Mặc định chữ sáng trên nền tối */
  background-color: var(--page-about-background-color);
  line-height: 1.6;
}

.page-about__section {
  padding: 60px 0;
  position: relative;
  z-index: 1;
}

.page-about__dark-section {
  background-color: var(--page-about-card-bg);
  color: var(--page-about-text-main);
}

.page-about__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-about__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 10px 0 60px 0; /* Chỉ 10px padding-top */
  overflow: hidden;
}

.page-about__hero-image-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: -1;
}

.page-about__hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.4); /* Làm tối ảnh nền để chữ nổi bật */
}

.page-about__hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 40px 20px;
  background-color: rgba(0, 0, 0, 0.4); /* Nền nhẹ để chữ dễ đọc */
  border-radius: 10px;
}

.page-about__main-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  color: var(--page-about-gold-color);
  margin-bottom: 20px;
  line-height: 1.2;
  font-weight: bold;
}

.page-about__description {
  font-size: 1.15rem;
  color: var(--page-about-text-main);
  margin-bottom: 30px;
}

.page-about__btn-primary {
  display: inline-block;
  background: var(--page-about-button-gradient);
  color: #ffffff;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-about__btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.page-about__section-title {
  font-size: 2.5rem;
  color: var(--page-about-gold-color);
  text-align: center;
  margin-bottom: 40px;
  position: relative;
  padding-bottom: 15px;
}

.page-about__section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--page-about-primary-color);
  border-radius: 2px;
}

.page-about__text-block {
  font-size: 1.05rem;
  text-align: center;
  max-width: 900px;
  margin: 0 auto 40px auto;
  color: var(--page-about-text-secondary);
}

.page-about__content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__grid-item {
  background-color: var(--page-about-card-bg);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--page-about-border-color);
}

.page-about__grid-title {
  font-size: 1.5rem;
  color: var(--page-about-primary-color);
  margin-bottom: 15px;
  text-align: center;
}

.page-about__grid-text, .page-about__list {
  font-size: 1rem;
  color: var(--page-about-text-secondary);
  text-align: justify;
}

.page-about__list {
  list-style: none;
  padding: 0;
}

.page-about__list li {
  margin-bottom: 10px;
  padding-left: 25px;
  position: relative;
}

.page-about__list li::before {
  content: '✔';
  color: var(--page-about-glow-color);
  position: absolute;
  left: 0;
  top: 0;
  font-weight: bold;
}

.page-about__features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__feature-card.page-about__card {
  background-color: var(--page-about-background-color);
  border: 1px solid var(--page-about-border-color);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about__feature-card.page-about__card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.page-about__card-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  display: block;
}

.page-about__card-title {
  font-size: 1.35rem;
  color: var(--page-about-primary-color);
  padding: 20px;
  margin-bottom: 0;
}

.page-about__card-text {
  font-size: 0.95rem;
  color: var(--page-about-text-secondary);
  padding: 0 20px 20px;
  text-align: justify;
}

.page-about__commitment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
  margin-top: 40px;
}

.page-about__commitment-item {
  background-color: var(--page-about-card-bg);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--page-about-border-color);
  text-align: center;
}

.page-about__sub-title {
  font-size: 1.6rem;
  color: var(--page-about-gold-color);
  margin-bottom: 15px;
}

.page-about__text {
  font-size: 1rem;
  color: var(--page-about-text-secondary);
  text-align: justify;
}

.page-about__image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin-top: 25px;
  display: block;
  margin-left: auto;
  margin-right: auto;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.page-about__image--large {
  max-width: 1000px;
  width: 100%;
}

.page-about__advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__advantage-card.page-about__card {
  background-color: var(--page-about-background-color);
  border: 1px solid var(--page-about-border-color);
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.page-about__cta-wrapper {
  text-align: center;
  margin-top: 50px;
}

.page-about__future-vision {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-top: 40px;
  align-items: center;
}

.page-about__future-vision .page-about__vision-item {
  background-color: var(--page-about-card-bg);
  padding: 30px;
  border-radius: 10px;
  border: 1px solid var(--page-about-border-color);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.page-about__faq-list {
  margin-top: 40px;
}

.page-about__faq-item {
  background-color: var(--page-about-card-bg);
  border: 1px solid var(--page-about-divider-color);
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--page-about-primary-color);
  cursor: pointer;
  background-color: var(--page-about-background-color);
  transition: background-color 0.3s ease;
}

.page-about__faq-question:hover {
  background-color: var(--page-about-deep-green-color);
}

.page-about__faq-question::-webkit-details-marker, /* Hide default marker for Chrome */
.page-about__faq-item summary::marker { /* Hide default marker for Firefox */
  display: none;
}

.page-about__faq-toggle {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--page-about-gold-color);
}

.page-about__faq-answer {
  padding: 20px;
  background-color: var(--page-about-card-bg);
  border-top: 1px solid var(--page-about-divider-color);
  font-size: 1rem;
  color: var(--page-about-text-secondary);
  text-align: justify;
}

.page-about__faq-answer p {
  margin: 0;
}

.page-about__cta-bottom {
  text-align: center;
  padding: 80px 0;
  background-color: var(--page-about-deep-green-color);
}

/* Responsive adjustments */
@media (min-width: 769px) {
  .page-about__future-vision {
    grid-template-columns: 1fr 1fr;
  }
  .page-about__future-vision .page-about__image--large {
    grid-column: 1 / -1;
    order: -1; /* Đẩy ảnh lên đầu */
  }
  .page-about__vision-item:nth-child(even) {
    grid-column: 2 / 3;
  }
  .page-about__vision-item:nth-child(odd) {
    grid-column: 1 / 2;
  }
  .page-about__hero-content {
    padding: 60px 40px;
  }
}

@media (max-width: 768px) {
  .page-about__main-title {
    font-size: 2rem;
  }

  .page-about__description {
    font-size: 1rem;
  }

  .page-about__section-title {
    font-size: 2rem;
  }

  .page-about__text-block {
    font-size: 0.95rem;
  }

  .page-about__grid-title, .page-about__sub-title {
    font-size: 1.3rem;
  }

  .page-about__card-title {
    font-size: 1.15rem;
  }

  .page-about__card-text, .page-about__grid-text, .page-about__text, .page-about__list li {
    font-size: 0.9rem;
  }

  .page-about__hero-section {
    padding-top: 10px !important;
    padding-bottom: 40px;
  }

  .page-about__hero-content {
    padding: 30px 15px;
  }

  .page-about__section {
    padding: 40px 0;
  }

  .page-about__container {
    padding: 0 15px !important;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  /* Force responsive for images */
  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

  .page-about__hero-image-wrapper, .page-about__image-container, .page-about__card {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  /* Force responsive for buttons */
  .page-about__btn-primary,
  .page-about a[class*="button"],
  .page-about a[class*="btn"] {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-about__cta-wrapper {
    display: flex;
    justify-content: center;
  }

  .page-about__cta-wrapper .page-about__btn-primary {
    max-width: 80% !important;
  }

  .page-about__cta-bottom .page-about__btn-primary {
    max-width: 80% !important;
  }

  .page-about__content-grid, .page-about__features-grid, .page-about__commitment-grid, .page-about__advantages-grid, .page-about__future-vision {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-about__future-vision .page-about__image--large {
    order: -1; /* Đẩy ảnh lên đầu trên mobile */
  }
}